A scientist measures a pencil and finds that it is 12.2 cm. She then converts the number 12.2 cm into meters, finding that it is 0.0122 meters. How many significant figures are in the number 12.2 cm?

How many significant figures are in the number 0.0122 meters?
significant figures for 12.2 cm, and significant figures for 0.0122 meters.

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.

the answer is c i took the test